OSSA-2016-011: Nova may fail to delete images in resize state regression

:Date: September 21, 2016
:CVE: CVE-2016-7498

- Nova: ==13.0.0

Rajesh Tailor from Red Hat reported a vulnerability in Nova. If an
authenticated user deletes an instance while it is in resize state, it
will cause the original instance to not be deleted from the compute
node it was running on. An attacker can use this to launch a denial of
service attack. All Nova setups are affected.

- https://review.openstack.org/327398 (Mitaka)
- https://review.openstack.org/326262 (Newton)

- Rajesh Tailor from Red Hat (CVE-2016-7498)

- https://bugs.launchpad.net/bugs/1589821
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7498

- This bug is similar to OSSA-2015-017 (CVE-2015-3280) and was
  re-introduced in the first release of Mitaka version of Nova and it
  was re-fixed in nova-13.1.0.

Tristan Cacqueray
OpenStack Vulnerability Management Team

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